If you add one-third of a number to the number itself, you get 16.what is the number?

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).